"The Ballad of John and Yoko" is a song written by John Lennon, attributed to Lennon–McCartney as was the custom, and released by the Beatles as a single in May 1969. The song, chronicling the events surrounding Lennon’s marriage to Yoko Ono, was the Beatles’ 17th and final UK number one single.

Authored by Lennon while on his honeymoon in Paris, it tells of the events of his marriage, in March 1969, to Ono, and their publicly held honeymoon activities, including their "Bed-In" at the Amsterdam Hilton Hotel and their demonstration of "bagism".

Lennon brought the song to McCartney’s home on 14 April 1969, before recording it that evening. "Paul knew that people were being nasty to John, and he just wanted to make it well for him," said Ono. "Paul has a very brotherly side to him."

The song was recorded without George Harrison (who was on holiday) and Ringo Starr (who was filming The Magic Christian). In Barry Miles' biography, McCartney recalls that Lennon had a sudden inspiration for the song and had suggested that the two of them should record it immediately, without waiting for the other Beatles to return. Reflecting this somewhat unusual situation, the session recordings include the following exchange:

This session also marked the return of Geoff Emerick as recording engineer of a Beatle session after he quit working with the group during the tense White Album sessions nine months earlier.

Per Ian MacDonald and Mark Lewisohn:

Backed with Harrison’s "Old Brown Shoe", the single was released in the United Kingdom on 30 May 1969; Lennon and Ono were performing a second Bed-In at the Queen Elizabeth Hotel in Montreal at the time. The United States release followed a few days later on 4 June.

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